Vaxell 80iThe Vaxell 80i is a Polish aircraft engine, designed and produced by Vaxell of Bydgoszcz for use in ultralight and homebuilt aircraft.Design and developmentThe Vaxell 80i engine is a four-cylinder four-stroke, horizontally-opposed, displacement, air-cooled, direct-drive, petrol engine design. It employs dual electronic ignition, electronic, multipoint fuel injection and produces at 3100 rpm.